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-rw-r--r--activerecord/lib/active_record/locking/optimistic.rb5
1 files changed, 4 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/locking/optimistic.rb b/activerecord/lib/active_record/locking/optimistic.rb
index 1e37ffefc6..67b8efac66 100644
--- a/activerecord/lib/active_record/locking/optimistic.rb
+++ b/activerecord/lib/active_record/locking/optimistic.rb
@@ -184,9 +184,12 @@ module ActiveRecord
end
end
+
+ # In de/serialize we change `nil` to 0, so that we can allow passing
+ # `nil` values to `lock_version`, and not result in `ActiveRecord::StaleObjectError`
+ # during update record.
class LockingType < DelegateClass(Type::Value) # :nodoc:
def deserialize(value)
- # `nil` *should* be changed to 0
super.to_i
end